Electrical Installation

Vacuum Air Circuit Breakers in MV Distribution System for Electrical Construction

The air vacuum circuit breakers are of the triple pole indoor type for rated voltage 24 KV. They operate on the vacuum arc quenching principle and outstandingly cost effective. The vacuum breaker consists of the mechanism 2 housing complete with stored energy mechanism and control elements. The three poles with vacuum interrupters, cast resin insulators and bracing struts, and the operating rods connecting the mechanism with the breaker poles.

Telephone System In Electrical Construction Works

The contractor shall furnish and install a telephone system as specified herein and as shown in the drawings. The PABX shall be of the latest design in architecture and digital technology using stored program control (SPC) and PCM format. Cross bar or any other electromechanical switching system will not be considered. The processor memory shall be restored automatically upon restoration of power following a total power failure. The system must be readily available and have been installed and commissioned in the state in a similar configuration to that requested by this specification.

Method Statement For The Installation Of Power and Lighting System Wiring

Electrical Power and Lighting System Wiring

This method of statement specifies the detailed requirements and procedures for the installation of Power and Lighting System Wiring. Installation: No wiring be carried out until the appropriate tests required or in the electrical testing section have been done and the consultant has given his clearance for wiring to commence. A loop in form of wiring shall be used as far as practicable or unless otherwise indicated. Joints in conductors shall be made using insulated terminal blocks complying with requirements of this specification.

Method Statement For Installation Of Galvanized Conduits On Exposed Surface

Method Statement For Installation Of Galvanized Conduits On Exposed Surface

Method Statement For Installation Of Galvanized Conduits that has to be installed on the Exposed Surface of a building is described here. This method of statement specify the detailed requirements and procedures for the installation of Galvanized Conduits for the exposed surface installation requirement for MEP services of the above building.

Method Statement For Installation Of Cable Tray Or Trunking

Ladder type Cable Tray Installation Method

Electrical Engineers seldom show interest acquiring knowledge and experience on cable tray installations. Most of them think it's a concern of mechanical fabricators to be taken care of it. A proper and professional way of cable tray installation requires good involvement and coordination of people from both electrical and mechanical disciplines. If cable tray system has been installed appropriately in a project, following advantages can be counted:

Electrical Engineering

Electrical Engineering
Electrical engineering deals with practical applications involving current flow through conductors; focuses on the design, construction, and operation of electrical systems and equipment. It includes developing, producing and testing of electrical and electronic devices and equipment, such as, generators to produce and distribute electricity, electric motors and other electrical machinery, transmission line.

Medium Voltage Cables (MV Cables) In Electrical Construction

Medium Voltage Cables (MV Cables) In Electrical Construction Works
The contractor shall supply, install, test and commission the 13.8 KV cable network as shown and indicated on the contract documents. Conductor sizes shall be metric as shown, conductor sizes with cross sectional areas smaller than specified will not be accepted. The cable installation shall include all trench work, sleeves, ducts, and all necessary fixings and cable terminations at both ends of the cable. The contractor shall supply and install cable marker posts to indicate the route of all underground cables. Markers shall be provided at every bend along the route and at sites of crossing roads or pipe lines.

Emergency Power Diesel Generating Set In Electrical Construction

Emergency Power Diesel Generating Set In Electrical Construction Works
This article covers the manufacture, supply, installation, testing and commissioning of 415 volts, 3 ph, 4 wire, Diesel Alternator Set (Diesel Genset). The set shall be mounted on common base frame and complete in all respects including the auxiliary equipment such as battery auxiliary, lube oil pumps, filters, oil storage tank, centrifuge, etc. including piping required for interconnection between the set and the auxiliaries which are mounted separately.

Electrical Earthing or Grounding Methods for Signal And Communication Systems

Electrical Earthing or Grounding in Signal And Communication Systems
Signal and Communication Systems: For telephone, alarm, voice and data, and other communication systems, provide 16 mm2 minimum insulated grounding conductor in raceway from a separate grounding electrode clean system to each service location, terminal cabinet, wiring closet, and central equipment location.

General Conditions And Requirements in Electrical Construction Contract

Electrical Construction Contract Drawing
A sample Specification for Electrical Construction Contract Works that describes General Conditions And Requirements to accomplish electrical works all in conjunction with Architectural, Civil, Mechanical and other services. All electrical equipment, materials, installation and workmanship shall comply with the latest edition of the applicable codes and standards of any of these organization listed below:

Transformers in MV Distribution System

Transformers in MV Distribution System
This specification intended to supply, install, test and commission mineral oil immersed 1500 KVA, 3 phase indoor transformers, fitted with cable boxes, bolts, and all necessary accessories. Transformers shall be indoor type, oil filled, two winding, four off load capacity, 2.5% taps, two above and two below high voltage rating in compliance with IEC 76 or BS 171.

Earthing or Grounding Methods for Plant Rooms And Fixed Machinery

Earthing or Grounding Plant Rooms And Fixed Machinery

A. Main earthing bar or loop is to be conveniently located in electrical/mechanical plant rooms, and connected by earthing conductors to exposed conductive parts of motor control centre at its earthing bar, and to motors, switches and other electrical equipment etc. at their earthing terminals, using 20 x 2 mm insulated copper strips or 35 mm2 insulated copper conductor (minimum size) or as required to carry maximum earth fault current for 1 second with final conductor temperature not exceeding 200 deg. C (392 deg. F).

High Voltage and Low Voltage Power Cables In Electrical Construction

Low Voltage Power Cables
This article explains electrical power cables used in construction works complete with supply, installation, testing and commissioning of High Voltage (HV) and Low Voltage (LV) cables. All cables shall conform to standards of IS 7098-1973, IS 1554-1976 and wiring cables to IS 694-1977 however, contractor shall comply with the latest or superseded versions of IS/BIS to be used for the complete work.

Methods of Installing External, Exterior and Outdoor Lighting System

External or Exterior lighting system
Installation Methods of External, Exterior and Outdoor Lighting System includes lighting equipment luminaires, control gears, panel boards, poles, brackets, cabling, and allied minor civil works. All installations are to be carried out under strict supervision of qualified supervisors and engineers. If installation required heavy vehicles, extreme care has to be taken for preventing damages of lighting equipment, control gears and poles.

Installation of Audio Intercom System For Building Project

Audio Intercom System
Audio Intercom System being used in high-rise buildings or commercial complexes, provide two way communication from entrances, gates, go-downs, industrial plants and normal doors, to an internal audio handset. It can be used to screen authorized visitors from outside entrance and useful to communicate internally between persons from one room to another room or office spaces. It can also be used to function as effective public announcement system.

Installation of Structured Cabling For Voice / Data System In Building Construction

Cat6 Voice / Data cables
The Contractor shall design, supply and install outlet plates, conduits, trunking, trays, wiring, junction boxes, distribution frames, patch panels, data rack, backbone cables, etc. necessary to form a complete structured system for voice and data cabling within the buildings. Cabling / wiring shall be provided for voice system from patch panel location to each voice/data outlet. Draw wires shall be provided in conduits for future data cabling / wiring by others (if applicable). The installation shall comply with the requirements of ANSI / EIA / TIA-568-1991 as appropriate as well as Local Telecom Authority.

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